Home / 103,696.56-155,559.96-51,109.20

Finding the Fourth Proportional to 103,696.56, 155,559.96 and 51,109.20

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Solution

The fourth proportional to 103,696.56, 155,559.96 and 51,109.20 is: 76,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.56 : 155,559.96 = 51,109.20 : x
  2. Step 2: Convert to fraction form
    103,696.56/155,559.96 = 51,109.20/x
  3. Step 3: Cross multiply
    103,696.56x = 155,559.96 × 51,109.20
  4. Step 4: Simplify right side
    103,696.56x = 7,950,545,107.63
  5. Step 5: Solve for x
    x = 7,950,545,107.63/103,696.56
  6. Step 6: Final answer
    x = 76,671.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.